Improvement in lifting-jacks



UNITED STATES BEERS B. TOMLINSON, OF MT. CARROLL, ILLINOIS.

IMPROVEMENT IN LIFTING-JACKS.

Specification forming part of Letters Patent No. 124,519, dated March 12, 1872.

Specification describing a new and Improved Lifting-J ack, invented by BEERs B. ToMLIN- SON, of Mt. Carroll, in the county of Carroll and State of Illinois.

The drawing represents a side view, partly in section, of my improved lifting-jack.

This invention relates to a new wagonjack of very simple and convenient make, and which is applicable to axles of suitable height. The invention consists in a new arrangement of standard shifting-lever and locking-link, as hereinafter more fully described.

A represents the standard of the jack. It is made of proper height, with a base sufficiently large to support it, and forked at the upper end. Bis the lifting-lever. It is notched at the lower end, Where it enters the fork of the standard; and one of the notches rests on the pivot a., which is iixed in A. A strap, b, is fastened to the lower edge of the lever B, opposite the notched portion thereof, to keep it confined to the pivot. The upper part of the lever contains steps c c, on one of which the axle to be lifted rests. The handle part d of the lever B has a row of notches on the upper side. C is a link, hinged to the lower part of the standard, and made to embrace the lever. A Weight resting on the step c will draw the handle part of the lever against the link C, and thus hold itself properly supported. The, further the lever is moved ahead on the pivot a the higher will it place its steps. The lever can thus be shifted for the front or hind axle Without requiring the displacement of the pivot a with the notched lever B and link C, all arranged substantially as herein shown and described.

BEERS B. TOMLINSON.

Witnesses:

A. L. PRATT, J. J. ItIsING. 

